Title:
THERMOPLASTIC POLYMER BLENDS OF ISOTACTIC POLYPROPYLENE AND ALPHA-OLEFIN/PROPYLENE COPOLYMERS
Document Type and Number:
WIPO Patent Application WO1999007788
Kind Code:
A8
Abstract:
Thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer, said copolymer comprising crystallizable alpha-olefin sequences. In a preferred embodiment, improved thermoplastic polymer blends are provided comprising from about 35 % to about 85 % isotactic polypropylene and from about 30 % to about 70 % of an ethylene and propylene copolymer, wherein said copolymer comprises isotactically crystallizable propylene sequences and is predominantly propylene. The resultant blends manifest compatibility characteristics, increased tensile strength, and improved process characteristics, e.g., a single melting point.
Inventors:
DATTA SUDHIN (US)
GADKARI AVINASH C (US)
COZEWITH CHARLES (US)
GADKARI AVINASH C (US)
COZEWITH CHARLES (US)
Application Number:
PCT/US1998/009802
Publication Date:
June 10, 1999
Filing Date:
July 23, 1998
Export Citation:
Assignee:
EXXON CHEMICAL PATENTS INC (US)
International Classes:
C08L23/10; C08L23/12; C08L23/14; C08L23/16; C08L51/06; C08L53/00; C08F210/06; C08L23/02; (IPC1-7): C08L23/10; C08L23/12; C08L23/16
Download PDF:
Previous Patent: PROCESS AND COMPOSITION FOR IMPROVING THE PAINTABILITY OF POLYOLEFINS
Next Patent: DYE INTERMEDIATE AND METHOD TO MANUFACTURE DYES
Next Patent: DYE INTERMEDIATE AND METHOD TO MANUFACTURE DYES